50,000 BTU/HR

PROPANE CONSTRUCTION HEATER

THEORY OF

OPERATION

THE FUEL SYSTEM

The hose/regulator assembly attaches to the propane gas supply. This provides fuel to the heater.

THE AIR SYSTEM

The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

THE IGNITION SYSTEM

The piezo ignitor lights the burner.

THE AUTOMATIC CONTROL SYSTEM

This system causes the heater to shut down if the flame goes out.

 

Combustion Chamber

Fan

 

 

 

 

Motor

Clean

 

 

Heated Air

 

Cool Air

Out

 

 

In (Back)

(Front)

 

 

 

Hose/

Regulator

Assembly

Air For Combustion

Air For Heating

Figure 2 - Cross Section Operational View

ASSEMBLY

1.Remove screw from top of fan guard. Discard screw.

Remove

Screw

Flat Side Facing Up

Slot

Nut Clip

Shell

Nut Clip

Screws

Handle

Figure 3 - Removing Screw from Top of Fan Guard

2.Insert nut clip (provided with handle) with flat side facing up through slot in top of shell. Align holes in nut clip with screw hole behind slot in top of shell. (see Figure 4).

Figure 4 - Installing Nut Clip

3. Place handle over hole and clip. Insert two screws (provided with handle)

through handle and tighten into shell. Figure 5 - Attaching Handle Make sure rear screw goes through

shell and into fan guard. Tighten screws firmly.

Rear of Heater

4

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Desa RM50PVA owner manual Theory Operation, Assembly